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From |
"Shehzad Ali" <sia500@york.ac.uk> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
st: RE: RE: RE: RE: clorenz syntax |

Date |
Mon, 30 Jun 2008 20:29:17 +0100 |

Thanks, Nick. I will try the subtraction method. Regards, Shehzad -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nick Cox Sent: 30 June 2008 19:33 To: statalist@hsphsun2.harvard.edu Subject: st: RE: RE: RE: clorenz syntax That it is a user-written programme is just a fact; mentioning that signals to others that they might need to install it before they can use it. In this field most of the good stuff is user-written, but that is not in itself a problem. Others know more about this than I do but I imagine that you should use -glcurve-, as already advised, generate new variables containing curve coordinates, and then "subtract" one curve from another. I guess that subtraction might at worst entail interpolation to ensure that curves were measured for the same coordinates. I can't advise further. Nick n.j.cox@durham.ac.uk Shehzad Ali Thanks, Nick. You rightly pointed out that it's a user written programme. The reason I wanted to use -clorenz- is that it plots the difference between concentration curves. I don't think -glcurve- does that. Do you know of any other way of plotting the difference between concentration curves? Nick Cox -clorenz- is a user-written program from SSC. (As I often point out, you are asked to explain where user-written programs you refer to come from.) I've not used it ever, but a glance at the help file indicates that there is no way that it will support your syntax. The syntax is of standard form syntax varlist [, <options> ] so that I do not know why you expect it to support syntax (varlist , <options>) (varlist, <options>) The program also seems to lack some standard features (e.g. support for -if- or -in-) and to be written in sub-standard style (e.g. uses variable names that may already be in use). I suggest that you check out -glcurve- by Philippe van Kerm and Stephen Jenkins on SSC. That's well written, well documented and well supported. Nick n.j.cox@durham.ac.uk Shehzad Ali Maybe I am doing something wrong with the syntax here. I am trying to plot the difference between concentration curves using - clorenz -. Can I plot two differences on the same graph? Here is what I am trying to do but am getting syntax error. clorenz (x1 y1, hweight(weight) rank(rank1) dif(c1)) (x2 y2, hweight(weight) rank(rank2) dif(c1)) * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ No virus found in this incoming message. Checked by AVG. Version: 8.0.101 / Virus Database: 270.4.3/1526 - Release Date: 30/06/2008 08:43 * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: clorenz syntax***From:*"Shehzad Ali" <sia500@york.ac.uk>

**st: RE: clorenz syntax***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**st: RE: RE: clorenz syntax***From:*"Shehzad Ali" <sia500@york.ac.uk>

**st: RE: RE: RE: clorenz syntax***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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